The human heart is a highly efficient biological pump that works continuously for decades with very low energy consumption and minimal maintenance requirements. It is often compared to an efficient low-power biological machine due to its durability and energy efficiency.
A heart that beats for so many years minimum input and without maintenance is a proof that:
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This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the Engineering College Admission Test (ECAT) preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.